Event: Super League (rapid)

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Opponent Rating Result
Zack Norris 1837 0 - 1
Jim Beaty 1812 0 - 1
Jim Beaty 1849 1 - 0
Richard Maclannan 1770 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1617 = (7268 + 400 * (1 - 3)) / 4)

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